Improvement in water-elevators



N,FETERS. PHOTO LTHUGRAPHER WASHINGTON u C UNITED STATES PATENT OFFICE..

A. D. HUMPHREY AND TOBIAS FORBES, OF OLYDE, NEW YORK.

IMPROVEMENT IN WATER-ELEVATORS.

Specication forming part of Letters Patent No. 44,531 dated October 4, 1864.

To @ZZ whom it may concern:

Be it known that we, A. D. HUMPHREY and TOBIAs FORBES, of Olyde, in the county of Wayne and State of New York, have invented a-new and Improved Water-Elevator; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making part of this specification.

Figure l is a side elevation of a water-elevator provided with our improvement; Figs. 2 and 3, different elevations of a detached portion to which our invention pertains on an enlarged scale.

Like letters designate corresponding parts in all of the gures.

Our invention has for its obj ect an improved means of connecting the crank with the windlass, so that the empty bucket may be allowed to run back into the well without turning back the crank, and so that the descent of the bucket may be perfectly under the control of the operator.

On the shaft a of the bucket-windlass we mount a disk or wheel, B, so that the windlass may turn freely when not specially impeded, while the disk remains stationary. Outside of this disk another smaller disk or cylinder, A, is secured fast to the windlassshaft.

The crank C is pivoted to the loose disk B at c, so that its angle on the disk may be varied to a certain extent. At the inner end of the crank there is a long projection, D, extending backward near the fixed disk or cylinder A, being curved so that its inner surface shall correspond with and may be made to fit closely on the periphery of said cylinder7 as shown by red lines in Fig. l; but when the crank is drawn forward in the act of raising water this brake projection shall be somewhat separated from the cylinder, as shown by black lines in the same figure.

The inner end, d, of the crank, forward of the brake projection D, is somewhat eccentric from the pivot c in such a manner that when the crank is pressed forward in the act of raising water the eccentric will wedge forcibly against the cylinder A, and thereby couple the crank and its disk B to the windlass-shaft, so as to wind up the cord on the windlass and raise the bucket; but when the water has been emptied from the bucket and it is desired again to let the bucket down into the well,the crank is reversed or pressed backward, which loosens the eccentric portion d from the cylinder A, but brings the brake projection D into contact with the cylinder. The result is that the bucket is permitted to descend by its own weight; but the brake projection D, rubbing on the cylinder A, so retards the motion as to let the bucket down gently. Then when the crank is turned forward again the very act brings the eccentric again forcibly in contact with the cylinder. A spring, b, Fig. l, also holds the crank forward and coupled to the windlass, thus insuring safety, except when the crank is purposely reversed.

In order to render the operation of this device perfectly effectual,it is necessary that the disk B should be held from turning when the bucket is running back into the well. We employ an improved device to effect this,and still allow a very free turning of the disk forward when raising the bucket again. The inner surface of the disk,near its edge or periphery,is formed in scallops or rounded radial alternate furrows and ridges, as shown in Figs. 2 and 3,at f. Against these scallops a roundfaced detent, H, plays. The detent is pivoted on a pin, h, projecting from a standard, G, which is secured to the frame or curb F. When the disk moves forward,it continually lifts the detent from the scallops f f, and the motionis free; but the moment the disk is reversed in motion the detent holds in one of the rounded furrows and acts like a toggle-arm to prevent the disks moving in that direction. In order to prevent strain on the disk by this action, a counter-pressure pin, g, is situated close to the outer smooth face of the disk, as shown, being attached to the same standard G as the detent-pivot. There may be a friction-sleeve on the pin g, if desired.

This device is superior to a ratchet-wheel and pawl, inasmuch as it makes less noise and is freer in its action.

What we claim as our invention, and desire to secure by Letters Patent, is-

l. The crank O, constructed and operating sulostantially as specified, in combination with Water-elevator signed by 11s lohis 27th day oi the loose disk B and fast disk or cylinder A, June, 1864.

for the purpose herein seb forth. 1 w

2. The disk B, having a scalloped or rouud- OIIAUl-( furrowed edge, in combination with the round ed fletent H, when applied to a Windlass, all Vtnesses:

substantially as shown and described. ZINA HOOKER, f

The above specification of our improved EDWIN CHILD. 

